Super Smash Bros. Switch is coming, and though it's not a huge surprise - every home console since the series' N64 debut has had one - there's a lot of questions left unanswered after March's Nintendo Direct teaser.

Though we know who is working on it, some confirmed characters and a release window, there's a lot we're also unsure about right now.

What is Super Smash Bros. Switch, and is it an enhanced port or an entirely new game?

Super Smash Bro.s Switch is all-star fighter which sees characters and worlds from practically every Nintendo franchise come together in a single fighting game.

Third-party characters - from Sonic the Hedgehog to Mega Man, Pac-Man and Final Fantasy 7's Cloud - have got in on the act, too.

The big question on everyone's mind is whether Super Smash Bros. Switch is an entirely new game, an enhanced port of the Wii U version, or something in-between.

So far the Switch has had its fair share of the latter - Mario Kart 8's 'Deluxe' version added in all previous DLC, some new characters and minor gameplay tweaks, so there's a chance this could be the same approach.

What we do know is series director, Masahiro Sakurai, is returning to helm this game, despite suggesting the 3DS and Wii U versions were his last.

You could say this adds more substance to the theory it's an enhanced port, with the director okay to bring a smaller-scale project to the finishing line, or you could argue a port wouldn't need someone like Sakurai overseeing the project.

The release date of 2018 suggests a new game is possible, if you consider the gap between Wii and Wii U entries was four years apart - the same length of time since the Wii U and Switch editions (four years).

Either way, until we see and here more, it could be either - or both. We'll have to wait and see!

Super Smash Bros. Switch characters - who is confirmed so far?

Following the March Direct teaser, we know just a handful of characters confirmed for Super Smash Bros. on Switch:

Inkling Girl

Inkling Boy

Mario

Link

That's all we know for sure so far. If you wanted to try an educated guess of a few others, let's look at what characters have been in every single Smash Bros. game to date:

Captain Falcon

Donkey Kong

Fox

Jigglypuff

Kirby

Link

Luigi

Mario

Ness

Samus

Yoshi

Though the above aren't confirmed, they are are more likely than most to make a comeback based on previous instalments alone.

Then there's guesswork. The teaser shows silhouettes of the roster, which has led to some plenty of fan theories (such as the following from GameXplain). There's a chance that even the silhouettes are placeholders, so take it all with a pinch of salt.

Our guess (and it is no more than that) would be, if it's based on the Wii U version, could be most of the same roster with a few costumes and additions, including the already confirmed Inklings.

We'd love to see some Arms characters too, if Nintendo is listening!

What we don't know about Super Smash Bros. Switch

There are more things we don't know than we do know. All up in the air includes:

The total number of Super Smash Bros. Switch characters in the roster (there were 12 in the original Smash Bros., 26 in Melee, 39 in Brawl and a staggering 59 in 3DS and Wii U, including DLC)

Any confirmed Super Smash Bros. Switch stages

Any confirmed Super Smash Bros. Switch items

Any confirmed Super Smash Bros. Switch modes

Other gameplay changes between the Wii U and Switch entries

Whether amiibo will be supported (with an entire line of figures from the Wii U and 3DS editions, this is pretty likely)

If Super Smash Bros. Switch will have DLC of its own, or if it'll be a 'complete' package from day one like Mario Kart 8 Deluxe on Switch

There's a strong chance E3 2018 will be when we hear significant new details, so expect some of the above to be answered by then. June suddenly seems so very far away...